A coil with 25 turns of a square shape of 1.80 cm on each side. The total coil resistance is 0.35 ? and a magnetic field is applied perpendicular to the plane of the coil.
(a) If the magnetic field varies from zero to 0.50 T in 8 seconds, obtain the emf induced in the coil
(b) Find the magnitude and direction of the induced current in the coil.